2859945 has 16 divisors (see below), whose sum is σ = 4992192. Its totient is φ = 1386560.

The previous prime is 2859943. The next prime is 2859949. The reversal of 2859945 is 5499582.

It is not a de Polignac number, because 2859945 - 2¹ = 2859943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2859897 and 2859906.

It is not an unprimeable number, because it can be changed into a prime (2859943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8502 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (312012).

2^2859945 is an apocalyptic number.

It is an amenable number.

2859945 is a deficient number, since it is larger than the sum of its proper divisors (2132247).

2859945 is a wasteful number, since it uses less digits than its factorization.

2859945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17352.

The product of its digits is 129600, while the sum is 42.

The square root of 2859945 is about 1691.1371913597. The cubic root of 2859945 is about 141.9447149727.

The spelling of 2859945 in words is "two million, eight hundred fifty-nine thousand, nine hundred forty-five".